IBM SY44-5902-05 manual Appendix A. OS/400

For this test the cable must be an IBM cable with a wrap connector plugged in (note that IBM token-ring cables are self-wrapping; no external wrap connector is needed).

If this test completes successfully, the communications cable and the communications I/O adapter card are operating correctly.

If this test fails, the cause of the problem is the communications cable or the communications I/O adapter card.

To further isolate the cause of the problem, run the communications I/O adapter card test.

Communications I/O adapter test: The I/O adapter test verifies correct operation of the communications I/O adapter. Because this test loads a diagnostic program into the card, you must vary off all lines from the communications I/O adapter before running the test.

For this test to run on a facsimile I/O processor, the wrap connector cable must be attached from port A to port B on the I/O adapter card. This test sends a facsimile signal from port A to port B and back again.

To run this test on a wireless LAN adapter, you do not need a wrap connector. To test the radio and RS-485 hardware, run the wireless echo back test (see “Wireless echo back test” on page 313).

To run this test on a communications adapter that has two ports, this is a two step test. The selected port on the on the two port adapter cable is tested first, then the I/O adapter card.

If this test completes successfully, the communications I/O adapter card is operating correctly.

If this test fails, the I/O adapter card might be failing.

Notes:

1.Verify that the wrap connector has the correct identifier (as indicated by the display prompt) and is correctly installed .

2.In some conditions, the associated I/O processor is the failing card. Select the I/O processor test option, if it is available on the display, to verify the I/O processor operation.

Communications I/O processor test: The communications I/O processor test verifies the correct operation of the I/O processor card. Because this test loads a diagnostic program into the card, you must vary off all lines from the communications I/O processor before running the test.

If the test completes successfully, the I/O processor card is operational.

If the test fails, the I/O processor card is failing.

Communications I/O processor memory test: The communications I/O processor memory test verifies that the storage of the I/O processor card is operational. Because this test loads a diagnostic program into the card, you must vary off all lines from the communications I/O processor before running the test.

Appendix A. OS/400 311